<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>帅哥美女走一走</title>
</head>

<body>
    <div id="app">
        <ul>
            <li v-for="item in list" :key="item.id">{{ item.name }}</li>
        </ul>
        <button @click="run">走一走</button>
    </div>
    <script src="./vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                list: [
                    { id: 1, name: '帅哥' },
                    { id: 2, name: '美女' },
                    { id: 3, name: '程序员' }]
            },
            methods: {
                run() {
                    const tamp = this.list[0].name
                    for (let i = 0; i <= this.list.length - 2; i++) {
                        this.list[i].name = this.list[i + 1].name
                    }
                    this.list[this.list.length - 1].name = tamp
                    console.log(this.list);
                }
            }
        })
    </script>
</body>

</html>